Mixing-valve.



H. K. MAYER.

MIXING vALvE.

APPLICATION FILED JUNE 24| 1914. V

Lg., v Patentedmu. 1916.

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H.` K. MAYER.

MIXING VALVE.

APPucATsoN man June 24. 1914.

l, w. Patented Jan. 25, 1916.

2 SHEETS-SHEET 2.

HENRY K; MAYER, OF FOBiT COLLINS, COLORADO.

MIXING-VALVE.

meente.

To all whom it may concern: f Beit known that I, HENRY K. MAYER, a

citizen of the United States, residing at Fort.

Collins, in the county of Larimer and State of Colorado, have invented certain new and useful improvements in Mixing-Valves, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to mixing valves such as are commonly employed upon soda fountains, and has for its primary object to provide a simply constructed and efficient device of this character for mixing twoor more different liquids, vapors, or gases which are ejected into a mixing chamber by pressure either naturally or artificially produced.

The invention has for another object to provide a valve of the above character which is so constructed that one of the liquids is permitted to {iow into the mixing chamber after the several liquids have been mixed together and the other ports cut off, whereby the mixing chamber is cleansed.

My invention has for a still further object to provide improved means for regulating the flow of the liquids to the mixing chamber whereby the proportions of the same in the mixture may be varied as desired.

With the above and other objects in view, the invention consists in novel features of construction, combination, and arrangement of parts as will be hereinafter referred to and moreparticularly pointed out in the specification and claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which- Figure 1 is a vertical section of a mixing valve embodying my invention in its preferred form; Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is a side elevation of thebody with the rotary valve removed; Fig. 4 is a detail face view of the valve'v disk;

' and Fig. 5 is a detail-section taken on the Referring in detail to the drawings, 5 designates the body of the valve which is of rectangular form, and is provided upon its bottom face with a discharge nozzle 6. This nozzle is connected by means of a plurality of ports 7 to the mixing chamber 8 which is formed in one side of the valve body. A horizontally disposed valve shaft 9 is mount- Specication of Letters Patent. i

Patented dan.. 25, 1916.

Application led J une 24, 1914. Serial No. 847,092.

' ed in the body 5, and is provided with an enlarged cylindrical-.end portion 10 which extends centrally through the mixing chamber. Beyond the enlarged portion 10 of this shaft, the lsame is'provided with a squared or rectangular portion indicated at 11 for engagement in a similarly shaped opening provided in one end of a U-shaped operating arm12.

Upon theinner end of the enlarged portion 10 of the shaft 9, the rotary valvev disk 13 is keyed or otherwise secured. The periphery of this valve disk is preferably concave or grooved and the inner face of said disk is recessed to receive a gasket 14 of fiber or other suitable packing material. rlhe valve is provided with a plurality of pins 15 to extend into' openings formed in the gasket and prevent rotation thereof with respect to the disk. The wall of the mixing chamber 8 at its outer end is threaded to receive a peripherally threaded circular nut 16 where by the mixing chamber is closed. This nut is, of course, provided with a central opening to accommodate the enlarged portion 10 of the valve shaft and carries avfiber gasket or washer 17 which surrounds said shaft and prevents leakage. |lihe outer end portion of the enlargement 10 is threaded to receive a nut 18 and the squared end 11 of the valve shaft has a threaded socket to receive the threaded stem of a lock nut 19 Awhich retains the operating arm 12 in connection with said shaft. rlhe opposite end of the valve shaft 9 is also threaded to receive a cylindrical nut 20 which is adapted to be received in a recess 21 formed in the face of the valve body 5. A lock nut 22 is also threaded upon the extreme end of the valve shaft to engage the nut 20 and hold the same in position. Upon the sleeve of this lock nut 22, the other end of the operating arm 12 is loosely engaged.

rlhe valve body 5 is provided with Athe equidistantly spaced fluid inlet ports 28, 24, and 25 respectively, said ports entering through one side of the valve body in a plane at right angles'to the shaft 9 and having their inner ends turned and extending in parallel relation to said shaft and opening upon the inner wall of the mixing chamber 8.

the same distance from the axial center of the shaft 9. The ports 26 and 27 in they valve disk, however,.are slightly closer to each other than any two of the ports in the valve body, the purpose of whlch will be later explained. A series-of auxiliary ports 28 in the .valve disk communicatewith each of the openings 26 and l27 and open upo the grooved periphery of said disk. Through these latter ports the liquid is discharged into the mixing chamber 8. The U-shaped arm 12 is centrally provided with a suitable handle indicated a't 29 which may be of any desired ornamental form. In order to regulate the flow of the several fluids, I provide the threaded plugs 30 mounted in threaded openings formed in the valve body and communicating with the respective ports 23, 24,

and 25. The inner end of each of these plugs is of semi-circular form in cross section or reduced as at 31 so that when the plug is turned to one position, the liquid may ow freely through the port, and upon turning the plug to a greater or less extent, the volume of flow will be reduced accordingly.

Having now described the construction and arrangement of the several features of my invention, its operation will be understood as follows. When the arm 12 is in a vertical position, the ports 26 and 27 are out of registration with the ports of the valve body. When, however, the arm 12 is swung in one direction, the valve disk 1,3 is rotated and the port 26 brought into registering relation with.the port 24 in the valve body while the other port 27 of the disk registers with the supply port 25. Owing to the fact ythat the ports 26 and 27 are arranged closer to each other than are the ports 24 and 25, they ortl26 will lap over the port 24,slightly 1n advance of the registration of the port 27 vwith the supply port 25. Thus the fluid lwill be first supplied to the mixing chamber from the port 24, and immediately afterward another Huid will be supplied from the port 25, said fluids being discharged from the 'auxiliary ports 28 in the valve disk into the mixing chamber 'and mixed together. After the fluids have thus been mixed, they are. discharged through the ports- 7 in the valve body from the nozzle 6 thereof. Of course, it` will be understood that when the movement of the arm 12 is reversed, the port 27 in the valve disk'will first lap overv the port 24 inthe body 5, and the port 26 will then register with the port p 23. Ill/henv the latter two ports are infull registration-the port 27. in the valve disk is slightlylapped upon the port 24 so that whenth'earm 12 is. moved to shut off the flow o liquid, theY port 27 will not be disrtf-24,fwhenfthe flow through the port 28 entirely cut off. Thus it will seenv that theiiuid'enterin'g the valvebody uti of Ac'u'miplete v registration with through the port 27 is supplied to the mixing chamber after the mixture is discharged therefrom. Supply port 24 on each movement of arm 12 is first opened and last closed. This additional supply of fluid operates to clean the walls of the mixing chamber whereby the device is maintained in a sanitary condition. By means of the'several threaded plugs 30 the proportions of the the several iuids to be mixed may be nicely.

regulated, and such mixtures rendered unij form.

The several parts of the valve may be very easily and quickly assembled or disassembled, thereby further conducing to the maintenance of the device in a thoroughly sanitary condition.

While I have above described the preferred form, construction, and arrangement of the several elements employed, it will be understood that the device is, nevertheless, susceptible of considerable modification therein, and I therefore reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

What is claimed is:y l

1. A mixing valve for soda fountains comprising a body provided with a plurality of syrup supply ports and a water supply port, said body having a mixing chamber, `a rotary valve disk mounted in said chamber and provided with spaced inlet ports to receive syrup from one of the ports in the body and water from another of said ports and separately discharge the same into said mixing chamber, the ports in the valve disk being so spaced .with respect to the ports to receive s up and water from the' ports in the valve `ody in a segregated state,

meme@ i said valve disk being provided with a series of relatively small `auxiliary ports communicating with each receiving port and adapted to discharge` each of the two Huids in a plurality of directions into the mixing chamber, said body having discharge ports for the fluid communicating with said chamber, and means for rotating said valve.

3. A mixing valve for soda fountainscomprising a body having'a mixing chamber and syrup and water supply ports communicating therewith, a flat rotary disk valve mounted within said chamber and having spaced ports to lreceive the vsyrup and water from theports in the valve body, the ports in said disk being spaced apart to a, less extent than the adjacent syrup and water supply ports in the valve body, said disk being further provided with a plurality of relatively small auxiliary ports leading from each of the receivingports to the periphery of said disk and ejecting the segregated fluids in small streams in a plurality of directions into said 4mixing chamber, the supplyof water to one of the ports in said valve continuing after the supply of syrup to the other port thereof has been cut oli', whereby the walls of the mixing chamber will be cleansed, said body having discharge ports communicating with the mixing chamber, and means for rotating said valve disk.

In testimony whereof I hereunto ax my signature in the presence of two witnesses.'

- HENRY K. MAYER. Witnesses:

A. Roscoe BALEs, RUSSELL W. FLEMING. 

